| 发明名称 |
METHOD AND APPARATUS TO SELECTIVELY REDUCE WELLBORE PRESSURE DURING PUMPING OPERATIONS |
| 摘要 |
The present invention provides for a tool having diverter valves to reduce the pressure in a wellbore caused by frictional resistance to fluid flow as the beta wave of a gravel pack operation makes its way up the wellbore.
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| 申请公布号 |
CA2493210(C) |
申请公布日期 |
2011.10.18 |
| 申请号 |
CA20052493210 |
申请日期 |
2005.01.19 |
| 申请人 |
SCHLUMBERGER CANADA LIMITED |
发明人 |
ANYAN, STEVEN L.;VIRALLY, STEPHANE J.;AARDALSBAKKE, OLUKEMI IBIRONKE;RODET, VINCENT F.E. |
| 分类号 |
E21B34/06;E21B33/00;E21B34/08;E21B34/10;E21B43/04;E21B43/12;E21B43/38 |
主分类号 |
E21B34/06 |
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